Fisher LNG Liquefaction Solutions ® Proven control valve technology for your LNG facility
| Fisher® LNG Liquefaction Solutions 1 Let Emerson Help Solve Your Toughest Challenge Your plant must produce LNG at an efficient and constant rate. If you don’t meet your production obligations, you not only lose revenue, you may be subject to contractual penalties. This means the control valves in your facility must operate reliably, the way you need them to in your most critical applications 24/7—with no surprises—to help your facility operate at its nameplate capacity.
Fisher® LNG Liquefaction Solutions | 3 1 2 13 4 2 12 2 4 3 85 7 3 2 5 2 Number of LNG Trains Utilizing Fisher Control Valves A History of Proven Results From the first LNG facilities built in Alaska, Brunei, and Algeria in the 1960s and 1970s, to the most advanced facilities currently under development, Fisher valves can be found in the majority of liquefaction facilities in the world. In fact, more than 70 percent of existing LNG production flows through Fisher valves.
| Fisher® LNG Liquefaction Solutions Typical Mixed Refrigerant Liquefaction Process The majority of existing LNG plants utilize a variation of the propane pre-cooled, mixed refrigerant liquefaction process. This process utilizes propane refrigerant to chill the feed gas and a mixed refrigerant to achieve liquefaction and sub-cooling. Most recent variations of the process produce 4.0 — 5.0 megatons per annum (mtpa) of output per train.
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| Fisher® LNG Liquefaction Solutions Typical Cascade Liquefaction Process A cascade liquefaction process typically utilizes three pure-component refrigerant loops: propane, ethylene, and methane. Feed gas is pre-cooled as it passes through the propane chiller before undergoing liquefaction and sub-cooling through ethylene and methane cold boxes. Most recent variations of the process produce 4.5 — 5.2 mtpa per train.
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| Fisher® LNG Liquefaction Solutions Inlet Feed Gas Control Valve The inlet receiving facilities serve a number of functions that are critical to the smooth operation of the entire facility. The receiving facilities knock out any liquids present in the feed gas, reduce the pressure from the gas pipeline, and throttle the flow of gas into the downstream processing units. Stable and reliable operation of the receiving facilities lays the foundation for the profitable operation of the entire facility.
Fisher® LNG Liquefaction Solutions | 9 Fisher NPS 30 ET Control Valve with FIELDVUE DVC6200 Digital Valve Controller
| Fisher® LNG Liquefaction Solutions Rich Amine Letdown Control Valve In facilities that receive raw gas from production, the acid gas removal unit plays a critical role in the process by stripping CO2 and/or H2S contaminants from the feed gas. The presence of these acid gases in excess of specified limits can cause significant issues in downstream units. The presence of H2S can cause serious corrosion issues and CO2 can cause freeze-up in the liquefaction train.
Fisher® LNG Liquefaction Solutions | 11 Fisher NPS 16 ET Control Valve with FIELDVUE DVC6200 Digital Valve Controller
| Fisher® LNG Liquefaction Solutions Amine Pump Recycle Control Valve Maintaining the proper flow of lean amine within the acid gas removal unit is necessary to ensure sufficient removal of CO2 and H2S from the feed gas stream. The lean amine pump ensures the stable flow of lean amine to the contactor. The amine pump recycle valve is most commonly used to facilitate startup and commissioning as the acid gas removal unit is brought up to capacity.
Fisher® LNG Liquefaction Solutions | 13 Fisher NPS 8 ET Control Valve with FIELDVUE DVC6200 Digital Valve Controller
| Fisher® LNG Liquefaction Solutions Gas-to-Flare Control Valve All gas processing facilities have a flare system to safeguard against overpressure of critical assets within the plant and dispose of any waste gas. Failure of the flare system to successfully relieve pressure from the process can lead to unexpected downtime or damage to costly pressure-retaining equipment.
Fisher® LNG Liquefaction Solutions | 15 Fisher NPS 20 FBT Control Valve with FIELDVUE DVC6200 Digital Valve Controller
| Fisher® LNG Liquefaction Solutions Compressor Antisurge Control Valve The efficiency and availability of a plant’s compressors both have a direct impact on the profitability of the facility. Unexpected downtime of any of the plant’s refrigerant loops will lead to reduced LNG production and the potential for hefty contractual penalties. Compressors also represent some of the most valuable pieces of equipment within an LNG facility.
Fisher® LNG Liquefaction Solutions | 17 Fisher NPS 42 FBT Control Valve with Optimized Digital Valve Actuation
| Fisher® LNG Liquefaction Solutions Joule-Thomson/Expander Bypass Control Valve The Joule-Thomson effect is leveraged throughout all of the primary liquefaction processes to achieve cooling of the feed gas or the refrigerant streams. It is used to achieve cooling of liquids, gases, or multi-phase fluids. Traditionally, this effect has been facilitated by a control valve that reduces the pressure of the fluid significantly and induces the desired cooling.
Fisher® LNG Liquefaction Solutions | 19 Fisher NPS 16 ET Control Valve with FIELDVUE DVC6200 Digital Valve Controller
| Fisher® LNG Liquefaction Solutions You’re Never Alone The way you manage key production assets like control valves directly affects your plant’s efficiency, reliability, and profitability. Emerson Process Management’s Fisher Services provides trusted expertise for control valve maintenance and repair.
Fisher® LNG Liquefaction Solutions | 21 Our extensive network of Service Center locations spans every continent. We’re there for you day or night, when and where you need us, 24/7/365. To learn more, scan the QR code or visit www. Fisher.
THE CONTROL VALVE YOU CHOOSE MATTERS WHEN YOU HAVE TO ACHIEVE EFFICIENT, PRODUCTIVE, AND RELIABLE PLANT OPERATION. When you buy Fisher control valves, you get the application expertise that comes from more than forty years of experience in the LNG industry. Plus you benefit from millions of dollars of research invested in reliability-centric testing of Fisher control valve technologies.
Fisher® LNG Liquefaction Solutions | 23 THRIVING IN EXTREME TEMPERATURES TROUBLESHOOTING CONTROL VALVES HIGH CYCLE TESTING Whether driven by process temperatures or climate extremes, control valves need to operate as specified. Fisher control valves in LNG applications are commonly tested at cryogenic temperatures of -196°C (-321°F) in numerous Fisher sites around the world.
If you found this brochure valuable, may we also recommend the following literature: Fisher Optimized Antisurge Control Valves ® High reliability to meet world-class production demands “Fisher® Optimized Antisurge Control Valves Brochure” FIELDVUE DVC6200 Series Digital Valve Controllers ™ Higher Process Reliability and Performance Document Number: D351146X012 www.EmersonProcess.com/Fisher/Documentation “FIELDVUE™ DVC6200 Series Digital Valve Controllers Brochure” Document Number: D351908X012 www.
